Stamping machine



T. LUND.

STAMPING MACHINE.

APPLICATION HLEDMAY l. |918.

Patented July 4, 1922.

3 SHEETS-SHEET l CASE /l/z/MBEIP.

Jfmw, Eidg IILLIIITIII'I II Patented July 4, 1922.

HSHEETS-SHEET 2.

WVM/70a T. LUND.

STAMPING MACHlNf-f.

APPLICATION FILED MAY I, I9Is.

Patented July 4, 1922,

3 SHEETS-SHEET 3 LSL" WVM/75H;

mw ZM THOMAS LUND, OF BEVERLY, MASSACHUSETTS, ASSIGNOR T0 'UNITED SHOE MACHIN- YERY CORPORATION, 0F PATERSON, NEW JERSEY, A CORPORATION OF NEW' JERSEY.

STM/irme MCHINE.

Application ined May 1, 191s.

To all zii/107,11rv 'it may concern Be it known that l, THoMAs LUND, a citi- Zen of the United States, residing at Beverly, in the county of Essex and State of Massacluisetts.V have invented certain Improve ments in Stamping Machines, of which the following description, in connection with the accompanying drawings, is a specifica* tionq like reference characters on the drawings indicating like parts in the several igures.

This invention relates to stamping machines and especially to such machines in which the impression mechanism is controlled by key mechanism to determine the character of the symbol to be printed.

An object of the invention is to provide simple and effective controlling means for connecting a stamping member having a plurality of impression surfaces with a series of keys for controlling it. For the attainment of this object, I prefer to employ a curved lever connected with the stamping member, and with which the series of keys contact at different distances from its fulcrum. This causes the lever to swing through different angles, and, by suitable connections, as intermediate toothed members, to so move the stamping member that different impression surfaces are brought into action. y

Another object of the invention is to furnish satisfactory means for maintaining the selected impression surface in its position for stamping. To this end, l associate with a series of keys a locking member common to all. Preferably, the parts are so organized that a depressed andlooked key of the series is released by actuating another key of said series. There is also shown a special release key for use when it is desired that no impression shall be produced Other objects will be hereinafter developed, reference being had to the accom# panying drawings, in which- Fig. 1 is a front elevation of one embodiment of my improved stamping machine;

Fig. 2 is a side elevation looking from the right in Fig. 1;

Fig. 3 is a front elevation of the key mechanism, parts being broken away and in section;

Specification of Letters Patent.

Patented July 4, 1922.

Serial No. 231,842.

Fig. 4 is a vertical section on the line 4-4 of Fig. 3; and

Fig. 5 is a transverse sectional detail on the line 5 5 of Fig. 8. The operating elements of the machine are supported by a casing comprising a main lower portion 10 and an upper portion 12 eX- tendlng in a generally vertical direction above the lower portion, and being shown of greater width laterally but of less depth from front to rear of the machine. The front of the base 10 of the casing is recessed between forwardly projecting portions, and through a lower horizontal surface 14 rises a work-supporting and pressure member 16 mounted to move in ways 18. Pivoted between depending arms 20 from the worksupport 16'is the upper link of a toggle 22, the lower end of the companion link being articulated to a slide 24 mounted for movement through a lug 26 near the bottom of the casing. The upward travel of this slide is limited by a collar 28 threaded uponthe bottom and contacting with the under side of the lug 26. Between the top of the lug and a collar 30 threaded on the upper portion of the slide is a helical spring 32, which holds the collar 28 normally in contact with the lug. By a change in the position ofthe collar 28, the height to which the work-support 16 is raised by the toggle may be varied, while an adjustment of the collar 30 changes the tension of the spring 82 and thus the resistance of the support to yielding when the impression is produced in the work. Pivoted at the center of the toggle 22 is an eccentric rod 34 surrounding at its opposite extremity an eccentric 36 secured upon a shaft 88 journaled in the portion 10 of the casing. This shaft 38 is rotatable through spur gearing 40 from a shaft 42 carried in the casing parallel to the shaft B8, and being driven by power applied through a pulley 44. The gear upon the shaft 38 is normally loose thereon but may be connected to it to compel its rotation by a clutch indicated at 46, this being held out of engagement by a spring 48 and actuated to cause the rotation of the shaft through a rod 50 controlled by some such device as a treadle (not shown).

`Above the recess in the portion 10 of the frame is fixed a horizontal spindle 52, on

which are mounted, side'by sideto turn 'bef tween opposite cheeks of the fra-me, `a series of stamping members furnished by disks 54. These disks are shown as segmental, each bearing upon its .periphery a` series of vimpression surfaces 56 arranged to produce on the work the symbols to be stamped. "The maximum number of impression surfaces .the desired indications.

-ingein conductors 60.

f To setthese stamping members-so any of their impression surfaces v,may be caused to lcome .into salinement :and cooperation with the work-support, avkey mechanism fis-pro- `vided zin `the :portion 1270i the frame. A ffront ,plate G2 :has formed in it vertical series I.o openings `through bosses 64, ythe series corresponding in number .to the diedisks, ,and .each .series `containing as kmany .keys as there' Aare .impression surfaces upon ,the correspondingdisk. 'Sliding within'the openings :in the front fplate are ,the-spindles G6 of keys, the heads or dinger EpiecesoS of which :are :located .outside the front plate.

They are limited in their routward 4movement bymembers ipinned'tofthe inner end 0i each spindle, Ieachoi? these members being forced `into contact with .the inner extremity of the :corresponding-boss -b-y Ya helical spring 72 surroundingthe spindle within the opening. The head 101i finger piece 68 of each key-bears the symbol whiehis controlled by this lkey =on the respective'disk. l fof the drawings shows these ifor' a machine arranged r'or stamping designations upon parts of shoes, two rows Vof -keys at the right having size-designations, .followed byia row for the half size; then two rows of width symbols, two of :match fmarks, and six `of case numbers. vFulerumed .upon .a rod E at Ithe topvoatheportion 120i: the casiugvis a` series ot curved levers 76, theedges oit which are alined A,withthe .vertical rows ofkeyrspindles. The lower `extremities of Itheflevers Yexcept thatat y'the centerpareofset laterally 'from the upper portions at y78 tobring them into substantial alinement with :the respective diefdisks, and-are rhereieach `j oined byfal link .8O with ..a rocker arm or .lever 82 pivoted upon a 4 spindle .83 extending yacross the -upper portion of the base 10, of ithe casing. each rockerv arm hayingpiformed :upon its lower end segmentalgear Sli.. ,The rocker varms 82, shown broken away in Fig. 8, may be 0E- operating with the alinea Y*which it is `in contact with the lever'.

set, it necessary, at their lower ends Vto bring the segmental gears 84 into mesh with gearsegments 86, preferably formed on the rear of each die-disk. Springs 88, connecting the leverswith the inner side of the front plate G2, draw the levers forwardly toward the rows of keys, and hold the die-disks in their .inactive positions, in wnich none of the impression surfaces is opposite the work-support. This relation is as illustrated in Fi 2 `of -the drawings. All the'keys upon depression moye through equal distances, or until their heads contact with vthe outer.: face oitftheplate 62. The end oii-each-spindle, co-

lever, swings it about .its ulcrum through an angle determined by :the distance which :the particular 'key vactuated is situated from theatrilcriim land by :thefportion of its=1noyement during The second yrelation lm ay be .varied Lby .locating 'the edge of the 'lever with which the key spindles contact at different normal dis .tances therefrom, asby curving its edge. ly ,properlyproportioning the elements,rthe depression of any key iscaused to rotate the disk to which this series o'f-keys corresponds, through suchja-n angle thatthe symbol upon ,the impression 'surface :brought over the work-support'will bethe same' as that borne by the key depressed.

Any key of aseries is locked in ,its actu- ,ated position, thus holding its die-disk in theproper relation to stampthe desired symbol upon the work, by latchingmeans, preferably commento the key series. This means consists of abar 90 pivoted at itsends upon pla-tes 92 secured te the` upper and lower .rows or" bossest. Alongthe inner edge ot each bar is 4a lcontinuous `latching vprojection 9e, zthis yprojection ,having an incline@ face, against which y:restsoppositely inclined faces upon the members 70 of this key series. Each bar isheld .in .normalcontactwith the .members .7()1by aspring96 vh avingzone arm secured to the :bar andthe opposite armcontacting` .with a pinr98projectingfromone of the plates 92.v Between the latch bars, slots are formed inthe plates .to allow the zmovement of the levers .76. Y

l/Vhen any onejof the keys is .depressed, the inclined surface 'ont the member 7() rides over Vthe incline upon the latch bar, and,

Vwhen Vthe top of the Ymember .'Oreaches theV bottom of the .latch barfprojectiom the 'lat- Vter is forced over it by Ythe'spring 96 to retain the key. At :this time tpractically `the i"'ull stroke has been made, so 4that the head llO of the key isin .close proximityY to the surface of the ,plate 62, asis illustrated in Fig. 4- of the drawings. "The lever actuated by the` key Vhasturned the corresponding Adisk through suchan anglejthat the symbol represented by the key is brought into alinement with the work-'support 16 and is there vupon the work.

held ready to produce the impression by the latch bar. When another key in the same series is pressed down, the member upon it forces aside the bar, and in so doing reeases the key previously depressed before the project-ion 94 engages and locks the newly actuated key. It may be that it will not be desired to use any character in a particular row or rows, and to permit the restoration of the previously depressed keys and disks to their` initial positions, a special release key is provided in each series, these keys being, in the present instance, shown as arranged in a horizontal row at the bottom of the plate 62. The relation of the ends of the spindles of the release keys to their .levers is such that their full travel does not more the levers from normal, but the member T() upon any of the depressed release keys will force aside the .latching bar and thus clear the series of disks in stamping position.

In using this apparatus, the operator presses the desired key in ,each series in which-he wishes a symbol to be impressed These are locked down as just described, with the impression surfaces of the die-disks alined with the work-support .in the correctrelation. The operator then plates the work upon the support with its inner edge against a gage 102 and en gages the clutch 46 by drawing doi Yn the rod 50. rIhe rotation of the shaft 3S straightens the toggle and carries the work-support and work into co-operation with the impression surfaces of the dies, producing upon the work the inscription the symbols for which have been set up on the keyboard. As long as the same designations are to be printed, this operation is continued by successive initroduetions of work and depressions of the treadle. If the operator wishes to change any of the symbols, it is only necessary to depress the proper key or keys, releasing the `previously adjusted keys and disks and bringing the new ones into position.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. In a stamping machine, a work support, a rotatable stamping member eo-operating with the support and having a plurality of impression surfaces, a series of movable keys of equa-l length, corresponding to the impression surfaces, a lever with which the keys contact at different distances from its fulcrum` and connections between the lever and stamping member arranged to rotate said member positively to bring the proper impression surfaces into and out of their working positions.

2. In a stamping machine, a work-support, a movable stampingmember co-operating with the support and having a plurality of impression surfaces, a series of movable keys of equal length corresponding to the impression surfaces, a curved lever with which the keys contact at diiferent distances from its fulcrum, connections constantly maintained between the lever and stamping member, and means for moving the worksupport toward and from the stamping member to produce the impression.

3. In a stamping machine, a work-support, a rotatable stamping member having a' plurality of impression surfaces, a lever, a series of keys of equal length and of equal stroke movable into contact with the lever to swing it through different angles, and connections between the lever and stamping member constructed and arranged to cause such different angular movements to bring different impression surfaces into co-opera tion with the work-support and reverse movement of the lever to return the stamping member to normal.

4. In a stamping machine, a \.\.forksupport, a rotatable stamping member mounted on a fixed axis and having a plurality of impression surfaces, a lever, a series of keys of equal length movable into contact with said lever to swing it through different angles, means for restoring each key to normal,

connections between t-he lever and stamping member constructed and arranged to cause such different angular movement to bringdifferent impression surfaces into co-opera tion with the work-support, and means acting upon the lever to return it and the stamping member to normal.

5. In a stamping machine, a work-sup port, a rotatable stamping member having a plurality of impression surfaces, a lever having a curved surface, a series of keys movable into contact with the curved surface of the lever to swing it-through different angles, and connections between the lever and stamping member constructed and arranged to cause such different angular movements to bring different impression surfaces into co-operation with the work-support.

6. In a stamping machine, a frame, a work-support vertically movable therein, a rotatable stamping member ournaled in the frameand having a plurality of impression surfaces any one of which may be turned into alinement with the support, a lever, a series of keys movable into contact with the lever to swing it through different angles, and inter-meshing toothed members cone nected to the stamping member and lever.

7. In a stamping machine, a work-support, a rotatable stamping member mounted on a fixed aXis and co-operating with the support and having a plurality of impression, surfaces, said member being provided with a segmental gear, a lever, a series of keys for moving the lever, a lever having a gear segment meshing with the segment of the stamping member, and a link connecting the levers.

`teeth of-eaclrdisk, a leverconnected to each .-gear, and a sei'ies of keysspacedapart along the length of the lever forturning said lever upon its fulci'um, the throiv of akey to the end of its stroke determining the extent of rotation of its die-disk.

9; In a stamping machine7 a Work-support, a series of movable die-disks co-operating therewith and each being 'provided Witha toothed portion, a gear meshingwvith the teeth of-each disk, a lever connected to each gear, and a series of keys for turning said lever upon its fulcrum, the plural series of keys occupying a greater space laterally "than the series of die-disks and their gearing, each of the levers having offset portions alined, respectively, With the die-disks and with the corresponding key series.

l0. In a stamping machine, a Work-support, a Amovable stamping member having a1 plurality of impression surfaces, a series of keys controlling the co-operation of particular impression surfaces With the Work support, keach key having a projection eX- tending at one side of the series, and acon- 30 tinuous member mounted adjacent to the series of Ikeys and ihaving a projection for engaging the proJection ofand vlocking any Voneof said keys iniitsfcontrolling position.

ll.` Ink a stamping machine, a Work-support, a movable stamping ymember having a plurality of impression surfaces, a series of `setting keys-controlling the (zo-operation of particular impression surfaces With the Work-support, and a member common to the kseries of keys for locking any one of said keys in its controlling position, said locking member Abeing arranged to :release a locked key upon the actuation of another key of the series, there Abeing included in the series of keys a release -key acting independently of sett-ing effect upon the stamping member.

l2. In a stamping machine, a Work-support,ga movable stamping 'memberhaving a plurality of impression surfaces, a seriesof keys `controlling the co-operation of particular impression surfaces with the Worksupport and 'each being provided with a projection, and a latch bar Vpivoted at one side of the series of keys and having 'a projectionfor engagement with those upon the keys.V

In testimony whereof I :have signed my lname to'tliis specification.

THOMAS LUND.

Certicate cf Correction.

It is hereby certied that in Letters Patent No. 1,421,511, granted July 4f, 1922,

upon the application of Thomas Lund, of Beverly` Massachusetts, for an improvement in Stamping Machines, lan error appears in the printed specication requiring correction as follows: APage 4L, lines 29 and 30, claim 10, strike out the Word continuous and insert the same before the Word projection in line 31; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the clase in the Patent Oce.

Signed and sealed this 7th day of November, A. D., 1922.

[SEAL] KARL FENNING,

Acting ommz'ssz'oner of Patents.

i ,i L 

